Al-CNT-Ni composite with significantly increased strength and hardness

被引：11

作者：

Billah, Md Muktadir ^{[1
,2
]}

Chen, Quanfang ^{[2
]}

机构：

[1] Bangladesh Univ Engn & Technol, Mat & Met Engn Dept, Dhaka, Bangladesh

[2] Univ Cent Florida, Mech & Aerosp Engn Dept, 4000 Cent Florida Blvd, Orlando, FL 32816 USA

来源：

SN APPLIED SCIENCES | 2019年 / 1卷 / 06期

基金：

美国国家科学基金会;

关键词：

Al/CNT composite; Ni-encapsulation; Electroless deposition; Interfacial bonding; Raman spectroscopy; ALUMINUM-MATRIX COMPOSITES; CARBON NANOTUBE; NICKEL; CONDUCTIVITY; MECHANICS; PLASMA;

D O I：

10.1007/s42452-019-0530-4

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this study, aluminium-carbon nanotube-nickel (Al-CNT-Ni) composite was prepared by powder metallurgy from pure Al powder and Ni-encapsulated CNT. Previously, carbon nanotubes were coated with nickel following ultraviolet-assisted electroless deposition method. Tensile strength and hardness of the composites were found to increase in proportion to the CNTs addition. For an addition of 7 wt.% Ni-coated CNTs containing 2.5 wt.% nanotubes of 8-15 nm diameter (Ni to CNT ratio was 1-0.357), resultant tensile and yield strength were increased by 129.26% and 157.48% respectively compared to pure aluminium. Hardness was also increased by 171.39%. These results were obtained while conventional sintering was followed by further consolidation by Hot Isostatic Pressing (HIP). Enhanced mechanical properties are attributed to the well dispersion of CNTs in aluminium matrix and strong interfacial bonding between CNT and aluminium. Well dispersion of CNTs and strong interfacial bonding was resulted from the uniform Ni-encapsulation as verified by red shift in Raman Spectroscopy.

引用

页数：6

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